diff --git a/src/olympic/turbine/include/turbine/gfx.hpp b/src/olympic/turbine/include/turbine/gfx.hpp
index 4356423e..6a8e1900 100644
--- a/src/olympic/turbine/include/turbine/gfx.hpp
+++ b/src/olympic/turbine/include/turbine/gfx.hpp
@@ -26,7 +26,7 @@ void removeDrawer(Context &ctx, Drawer *cd) noexcept;
 
 ox::Error initGfx(Context &ctx) noexcept;
 
-ox::Error setWindowIcon(Context &ctx, ox::SpanView<uint8_t> iconPng) noexcept;
+ox::Error setWindowIcon(Context &ctx, ox::SpanView<uint8_t> const &iconPng) noexcept;
 
 void setWindowTitle(Context &ctx, ox::StringViewCR title) noexcept;
 
diff --git a/src/olympic/turbine/src/glfw/gfx.cpp b/src/olympic/turbine/src/glfw/gfx.cpp
index 9e1dc779..f2157cc4 100644
--- a/src/olympic/turbine/src/glfw/gfx.cpp
+++ b/src/olympic/turbine/src/glfw/gfx.cpp
@@ -235,7 +235,7 @@ struct IconData {
 };
 
 [[nodiscard]]
-static ox::Result<IconData> toGlfwImgPixels(ox::SpanView<uint8_t> iconPng) noexcept {
+static ox::Result<IconData> toGlfwImgPixels(ox::SpanView<uint8_t> const &iconPng) noexcept {
 	ox::Result<IconData> out;
 	unsigned w{}, h{};
 	if (lodepng::decode(out.value.pixels, w, h, iconPng.data(), LodePNGColorType::LCT_RGBA)) {
@@ -246,7 +246,7 @@ static ox::Result<IconData> toGlfwImgPixels(ox::SpanView<uint8_t> iconPng) noexc
 	return out;
 }
 
-ox::Error setWindowIcon(Context &ctx, ox::SpanView<uint8_t> iconPng) noexcept {
+ox::Error setWindowIcon(Context &ctx, ox::SpanView<uint8_t> const &iconPng) noexcept {
 	OX_REQUIRE_M(icon, toGlfwImgPixels(iconPng));
 	GLFWimage const img {
 		.width = icon.w,